There's no Reject button in App Store Connect website, (In mobile Safari, Desktop Safari, or Chrome) or in the App Store Connect App. I was able to succesfully find the button for a couple other apps and reject them, but for one of my apps no Reject button is showing up. As I found a bug at the last minute. I followed the instructions here:
https://help.apple.com/app-store-connect/#/dev04f55d711
and it wasn't any help. It's been 12 hours since the App has been "Waiting for Review." Anybody know where the Reject button is? Thank you.